Gov. Bruce Rauner and Mayor Rahm Emanuel set aside their differences to lure Amazon’s second headquarters. Candidates line up for Illinois attorney general. And Obamacare rates in Illinois are set to soar.

A new episode of “Frontline” shines a light on the little-known story of the only U.S. bank to be prosecuted in the fallout of the 2008 financial crisis. We speak with the director and producer of “Abacus: Small Enough to Jail.”

Jumping into ocean waters teeming with sharks doesn’t sound like much fun, but for researchers working on shark conservation, it’s a way to gather important and sometimes surprising information. Meet Steve Kessel, the Shedd Aquarium’s new director of marine research.